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Sep 20, 2026 · Backend Development

Automating Fault Localization at 10M QPS: Evidence Chains Over Manual Hunts

This article details how to build automated fault localization for 10M QPS systems by unifying entity identities, aligning timestamps, integrating change records, and applying a four-layer engine—anomaly normalization, temporal correlation, topological pruning, and causal scoring—to converge millions of anomalies into verifiable hypotheses while avoiding correlation-causation pitfalls through counterfactual evidence and phased rollout.